Killer whales are the only natural predator of baleen whales—those that have "baleen" in their mouths to sieve their plankton ...

New research finds some baleen whale species call at such deep frequencies that they're completely undetectable by killer whales, which cannot hear sounds below 100 hertz. These also tend to be the ...

Orcas, like humans, get baby bumps in the early months of pregnancy and grow larger as the pregnancy advances. Researchers ...

Two studies reveal that the communication systems of most cetaceans examined adhere to the principles of efficiency and ...

Rochelle BakerLocal Journalism Initiative ReporterCanada's National ObserverFor a second time, the world watched as Tahlequah ...

The water may be frigid, but brave the temperatures, and you're rewarded with a smorgasbord of brightly colored critters that ...